Dog blocking tunnel attachment for a cat litter box



FIG. 1 is a perspective view of dog blocking tunnel attachment for a cat litter box and showing our new design;

FIG. 2 is a larger perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof, the opposite side view being a mirror image;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The cat litter box shown in phantom in FIG. 1 is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design of a dog blocking tunnel attachment for a cat litter box, as shown and described. 